WPICTF2020

[iohehe]

https://wpictf.xyz/

[iohehe]

[web] zoop

The page give a txt url like this http://storage.zoop/quarterly_report.txt. Press into the Attach you can get the content. so...you can read the flag.txt

[iohehe]

[web] dorsia2

The hint like this:
Hint: flag in ~/flag.txt
there has a video. look at that:

interesting, but made me confused.
so this server is written by C and the execlp function can execute a cat command in the system.